Normalize paths in unsafe path checker for current directory

[bitterpanda63]

/./ becomes /

Summary by Aikido

Security Issues: 0	Quality Issues: 0	Resolved Issues: 0

⚡ Enhancements

• Added normalize_path function that lowercased and cleaned path strings
• Normalized current directory patterns by removing '/./' and merging slashes

🔧 Refactors

• Replaced ensure_one_leading_slash usage with normalize_path calls across codebase

^{More info}